Expression Components

Each expression consists of an Element, an Attribute and a Value.

Keywords are used for Elements and can be used for Attributes and Values. All keywords are prefixed by ‘@'.

Element keywords may be:

@general which refers to the ‘clash’,

@element-1 which refers to one of the clashing elements,

@element-2 which refers to the other element.

Note:
No particular order is implied and there is no relationship to the elements 1 & 2 shown on the Clash Report.

Attribute may be a Keyword related to the Item, or may be any Marine Attribute, for example SHOP, or NAME etc

Value may be selected from a list-of-values related to the given attribute, or a Regular Expression, (Refer to Notes on Wildcards) or a Keyword (Refer to Expression Syntax).

Note:
The rules are formed by logical 'AND' operators between the expressions. There is no facility for logical 'OR' operators.